The Vietnam - Russia oil and gas joint venture Vietsovpetro said on September 11 that it completed the installation of the wellhead platform topside block of the BK-23 drilling rig at Lot 09.1 of Bach Ho oil field, 145 kilometres to the southeast of Vung Tau city a day earlier. More than 130 workers used a crane vessel to install the 760-tonne block in accordance with schedule, ensuring safety and the most rational costs despite bad weather conditions caused by typhoon Yagi.Source: Vietnam News Agency